Mold lock



?.ig.l.

1,505,470 G. R. KELM MOLD LOCK Filed June 22 1920 Sumo/whoa Patented Aug. 19, 1924.

UNITED s'rrss rice.

GUSTAV R. KELMI, OF NEW YORK, N, 'Y., ASSIG'NOR TO WALKER M. LEVETT' COMPANY, OF NE\V YORK, N. Y.

'. MOLD Application filed. June 22,

The objects of the invention are to pro vide a simple, practical, eflicient and relatively inexpensive lock for this purpose and one which can be readily adjusted to compensate for variations in the mold and to permit of the use of the locking device inter chanegably with different molds.

The invention involves a number of novel features of construction, combinations and relations of parts, all of which will be set forth in the following specification.

In the drawing accompanying and forming a part of the specification, I have disclosed the invention embodied in one of its simple practical forms, but wish it understood that modifications may be made without departurefrom the true spirit and scope of the invention, as will be apparent from the breadth of the appended claims,

Figure 1 in th drawing referred to is a front View of the locking device as applied to an ordinary two-part mold, the release position of the hook being indicated in dotted lines.

Figure 2 is a perspective separated view of the extensible hook structure, showing a' portion of the mold element on which itis mounted. L

in Figure 1 I have indicated at 5, and 6 the complementary parts of a two-part mold. At opposite sides of the lineof separation of these mold parts are mounted the studs 7 and 8 which ordinarily may simply be in the form of pins driven or otherwise'engaged in seats provided in the mold parts. The extensible hook element comprises in the present disclosure an upstanding supporting member 9 having a hub portion pivotally engaged on thestud 8 and provided with a laterally projecting extension or arm 10 on which the adjustable jaw member 11 is slidably supported. This jaw LOCK. I 1920; Serial in). 390,862.

member for such purpose is shown as provided with a sleeve portion 12 receiving the lateral supporting arm 10 and as also provided'with an upwardly projecting lug 13 formed with ascrew seat receiving the adjusting screw 14: which has a bearing in the upwardly projecting lug 15 on the pivoted supportingnicmber. This screw is shown as held against longitudinal movement in the bearing lug 15 by means of a set screw 16 engaging in the annular groove 17 formed in the shank 005 11118 screw. This set screw may be of such a length that it'can be turned in far enoughto engage and holdthe screw 14 in the position to which it isadjusted.

From the foregoing it will be apparent that by means of the adjusting screw the movable jawmay be shifted to increase or decrease the span or working length of the hook and this eitherjbefore or after the hook is in actual use. In the latter event the hook will operate as a vise to bring themold parts forcibly into proper engagement. When once the hook is adjusted to the de sired length it is preferably looked in this position by meansofthe set screwdescribed.

, i This construction. it will beobvious, en-

ables the setting of the hook to correct more or less slight inaccuracies in the mold which may arise from repeated heating and ooling or. the wearing of the meeting faces of the mold parts and a furtheryadvantage of this construction isthat-the hooks maybe made up in a standardsize or sizes and then be applied ,to and usedwith molds of different sizesfor molds in which the space between the centers of the pins 7 and 8 is variable. I p j 7 Another important featur of the invention is the provision of the hook with a shoulder to form a bearing for a pinch bar or other device ivhichmay be used as an operating lever. In the] drawing 1 have shown suchshoulder" in theforna of a lug 18 projecting angularly from the loweriend of the movabie jaw member'and arranged as the hook is swung "over the locking pin to pass beyond the pin so as to constitute a bearing for .the pinch bar, indicated at 19, I

as inserted between the locking pin 7 and the bearing lug 18. mien in this relation, standing at the lower side of the locking pin and substantially parallel thereto, it

will be seen, that a powerful closing force may be brought to bear upon the securing hook.

What I claim is:

1. The combination with a divisible mold, of means for securing the parts of said mold together comprising a shoulder on one of the mold parts, a pivoted hook on the other mold part provided with an extensible jaw for engagement with said shoulder and an actuating lug on the hook and arranged to stand to one side of the locking shoulder when the hook is engaged therewith to provide a hold for a hook operating lever inserted between the locking shoulder and said lug. I

2. The combination with a divisible mold, of means for securing the parts of said mold togethercomprising a stud on one of said parts and a hook for engagement with said stud pivotally connected with the other moldpart, said hook having a jaw engaging over the stud and provided with a projecting lug standing substantially parallel to and at one side of the stud to enable the engagement of a hook operating lever between said lug and the stud.

3. The combination with a divisible mold,

' of means for securing the parts of said over the studand provided with a projecting lug standing substantially parallel to mold together comprising a stud on oneof said parts and a hook for engagement with saidstud pivotally connected with the other mold part, said hook having a aw engaging and at one side of the stud to enable the engagement of a hook operating lever between said lug and the stud, said lug being disposed toward the free end of the hook and traveling to the far sideof the stud in theengagement of the hook over the stud to thereby enable the use of the lever described for the purpose of more firmly closing the hook over the stud.

4. The combination with separable mold parts, of a locking shoulder on one of said mold parts, a pivoted support on the other mold part, aholding jaw slidably mounted on said support and arranged to engage the locking shoulder and a screw for adjus ing said holding aw on its support and relative to the locking shoulder.

5. The combination with separable mold parts, of a locking shoulder on one of said moldparts, a pivoted support on the other mold part provided with a lateral extension,

- a holding jaw slidingly mounted on said extension and projectingtherefrom to engage the locking shoulder and a screw connected between the support and sliding jaw for ad justing the jaw on the extension and toward and away from the locking shoulder.

6. The combination with separable mold parts, or a locking shoulder on one of said mold parts, a pivoted support on the other mold part "provided with a: lateralextension, a holding jaw slidingly mounted on said eX- tension and projecting therefrom to engage the locking shoulder and a screw connected between the support and sliding ja w for adjusting the jaw on the extension and toward and away from the locking shoulder, said support and the sliding jaw having lugs projecting angularly to one side of the e2:-

tension and forming bearings for the adjustmg screw. v

7. The combination with separable mold parts, of a locking shoulder on one of said parts, a supporting member pivoted on the other mold part, a jaw member associated with said supporting member and arranged to engage the locking shoulder, one of the members described having a lateral projection and the other of said members having a passage receiving said projection and a screw connecting the two members and ad justa-ble for the purpose of increasing or decreasing the distance between the movable jaw member and the pivot of thesupporting member.

8. The combination with a. divisible mold, of means for securing the parts of said mold together comprising a shoulder on one of the mold parts, a pivoted hook on the other mold part provided-with a jaw for engagement with said shoulder and an actuating lug on the hook and arranged to stand to one side of the locking shoulder when the hook is engaged therewith to provide a hold for a hook operating lever inserted betweenthe locking shoulder and said lug.

9. Thecombination with separate mold parts, of a locking shoulder on one of said GUSTAV R. KELM. 

